import Vue from 'vue'
import Router from 'vue-router'
import routes from './routers'
import store from '@/store'
import iView from 'iview'
import {setToken, getToken, canTurnTo, setTitle} from '@/libs/util'
import config from '@/config'
const {homeName} = config

// begin 避免重复导航引起的错误
const originalPush = Router.prototype.push
const originalReplace = Router.prototype.replace
Router.prototype.push = function push(location) {
    return originalPush.call(this, location).catch((err) => err)
}
Router.prototype.replace = function replace(location) {
    return originalReplace.call(this, location).catch((err) => err)
}
// end 避免重复导航引起的错误

Vue.use(Router)

const router = new Router({
    routes,
    mode: 'hash'
})
const LOGIN_PAGE_NAME = 'userLogin'

const turnTo = (to, access, next) => {
    if (canTurnTo(to.name, access, routes)) next() // 有权限，可访问
    else next({replace: true, name: 'error_401'}) // 无权限，重定向到401页面
}

router.beforeEach((to, from, next) => {
    iView.LoadingBar.start()
    const token = getToken()
    if (!token && to.name !== LOGIN_PAGE_NAME) {
        // 未登录且要跳转的页面不是登录页
        next({
            name: LOGIN_PAGE_NAME // 跳转到登录页
        })
    } else if (!token && to.name === LOGIN_PAGE_NAME) {
        // 未登陆且要跳转的页面是登录页
        next() // 跳转
    } else if (token && to.name === LOGIN_PAGE_NAME) {
        // 已登录且要跳转的页面是登录页
        next({
            name: homeName // 跳转到homeName页
        })
    } else {
        if (store.state.user.hasGetInfo) {
            turnTo(to, store.state.user.access, next)
        } else {
            turnTo(to, store.state.user.access, next)
            // store
            //     .dispatch('getUserInfo')
            //     .then((user) => {
            //         // 拉取用户信息，通过用户权限和跳转的页面的name来判断是否有权限访问;access必须是一个数组，如：['super_admin'] ['super_admin', 'admin']
            //         turnTo(to, user.access, next)
            //     })
            //     .catch(() => {
            //
            //         setToken('')
            //         next({
            //             name: 'userLogin'
            //         })
            //     })
        }
    }
})

router.afterEach((to) => {
    setTitle(to, router.app)
    iView.LoadingBar.finish()
    window.scrollTo(0, 0)
})

export default router
